Timberlake's goal is to raise awareness of the global water crisis. Rapper Lupe Fiasco and singer Kenna are going with him (?!). He says: "I've been training four times a week to get my VO2 (oxygen consumption) levels up to expand my lungs. We'll climb a week straight, carrying 30 pounds on our backs. It's going to be intense, but it's going to be so rewarding. We're going to be ready for it." [Mirror via GQ]

Why hasn't Eminem been on the scene for three years? He's been on drugs. He says: "I wasn't ready mentally. I wasn't ready to give up the drugs. I didn't think that I had a problem. Basically, I went in, and I came out. I relapsed, and I spent the next three years struggling with it. Also, at that time, I felt like I wanted to pull back, because my drug problem had got so bad." He was also impacted by the death of his friend Proof: "I think it kind of hit me so hard. It just blindsided me. I just went into such a dark place that, with everything, the drugs, my thoughts, everything. And the more drugs I consumed, and it was all depressants I was taking, the more depressed I became, the more self-loathing I became." [XXL via The Sun]

Kate Moss had to cut short a vacay in the Maldives because her boyfriend and her gal pal weren't getting along. [Daily Mail]

Jennifer Aniston and Steve Zahn have a sex scene in the new movie Management. But poor Jen still can't escape being compared to Angelina; this column notes: "While it's no Mr. & Mrs. Smith, let's just say Mike (Zahn) ends up with his shirt off and his pants down to his ankles and Sue (Aniston) on her back on top of a table." [E!]

Martha Stewart Living Omnimedia has renewed Martha Stewart's contract and will pay Martha Stewart at least $2 million for the next three years so she can continue living as Martha Stewart. [WSJ]

Even though In Touch reported that Kate Hudson would be on , she apparently doesn't "do" TV. The rumor is "not true," says her rep. [E!]

Matthew Perry on Lost? "It is not true," says Perry. "I really don't know why those rumors have been floating about. I have admitted I am a Lost junkie. And at the press junket for [17 Again] I was asked what my favorite TV show was and I said [Lost], so maybe that's how they started." [EW]

Mandy Moore got help for her new acoustic rock album Amanda Leigh from her "in-home teacher," husband Ryan Adams. [Mirror]

Lady GaGa rocked the gay bash known as the Palm Springs White Party. She has said: "I love the gay community. Like bleeding heart love the gay community…it's a genuine love I have for them." [NBC Bay Area]

Audrina on her new reality show: "It's my life after The Hills, my journey. It's going to be a little spicier, edgier, older." We think this means drunken makeout sessions. [People]

Keisha Knight Pulliam, aka Rudy from The Cosby Show, is getting her own reality show on Oxygen, which involves her live-in boyfriend and will "explore what it's like to be "young, rich, single and co-habitating." The show will be called "Keisha and Kaseem." [AP]

It seems that Bruce Springsteen is the "victim" in that NJ divorce scandal where the wife was calling him the other man in her marriage. A source says: "The wife pestered Bruce, but he didn't have an affair with her. He's freaked out that he was named in her divorce because he barely knows her." [National Enquirer]

Daniel Radcliffe says the kissing scene between Harry Potter and Ginny Weasley is awkward: "Harry's got a real thing for her, and that is slightly odd because when we met I was 11 and she was nine." [Telegraph]

Speaking of Harry Potter, the Half Blood Prince flick will open two days sooner. [NY Daily News]

Uh, they are really squeezing the life out of this franchise: There will be a 5th Fast and Furious film. [NY Daily News]

Sean "Diddy" Combs has just been cast in a Judd Apatow flick, along with Elisabeth Moss and Rose Byrne. Get Him To The Greek stars Jonah Hill and Russell Brand, and the gist of it is that a record label intern (Hill) is hired to get an out-of-control rock star (Brand) from London to a gig at the Greek Theater in L.A. While it might have been interesting if things were shaken up a bit, Diddy plays the record label boss while Moss and Byrne play girlfriends. Of course. [Hollywood Reporter]

Catherine Keener has been cast in a fantasy/adventure flick called Percy Jackson, in which she will play a mom whose son is half human (his father is Poseidon). [Hollywood Reporter]

Here's a profile on legendary producer Jon Peters, whose memoir is "filled with outrageous tales of Jack Nicholson and hookers, and Barbara Walters in her undies." he may have told a room of people that Baba Wawa had "a great rack and nice ass." [The Daily Beast]

After saying that he "totally understands OJ" Simpson, Hulk Hogan has issued a statement, claiming he "in no way condones the OJ situation. As part of a larger conversation, he referred to it to exemplify his frustration with his own situation." [ET]

"Electroclash godmother Peaches and voodoo loving rave producer Drums of Death get together in the latest issue of Dazed & Confused to talk about drugs, power ballads, performance art, their favourite fancy dress costumes, and working together on her new album I Feel Cream." [Dazed Digital]

Former "pin-up" Heather Thomas has written a novel called Trophies, about Hollywood wives and fundraising. She says: "I researched this and found these wives are responsible for directing about 80 percent of the foundation monies in America. It is the wives who have the time and can draw things to their husband's attention. Trophy wives are seen as charms on a man's arm, but I have come in contact with a lot of billionaires and their wives are busy and often have PhDs and are brilliant businesswomen. I've yet to meet a bimbo trophy wife." [Reuters]

Actress Tawny Kitaen has settled a fraud suit against her ex, so you can go back to not thinking about her. [AP]

Blind item! "Which funnyman doesn't even bother to hide his drug habit? When pals come to visit his pad, they're just as likely to see baggies of cocaine lying around as they are to see throw pillows." [Gatecrasher]

"Your blob [sic] is very funny and clever. You have so much fun with it. No wonder everyone loves it." — Diablo Cody's mom. [Page Six]

"When the show started it was such a different beast. It was exciting and dangerous and funny and edgy and bizarre. [Then] it started feeling a little complacent, and that was very frustrating… When you have a jewel, why not polish it and put it out there for all to see?" — Nicolette Sheridan on Desperate Housewives, which she felt never gave her character enough attention. (Her last episode airs Sunday.) [LA Times]

"Edie's already slept with most of the guys on the street and has caused about as many problems as she could. We will find a new kind of sexiness coming through Wisteria Lane. What I won't do is cast another fortysomething sexy blonde. [Sheridan] performed the aging neighborhood tramp better than anyone has ever done before." — Desperate Housewives creator Marc Chery. [LA Times]

"I think a wedding is about love, friends, family and fun. I think spending millions of dollars on a wedding is ridiculous and it has never been my dream. I would never do that." — Salma Hayek, denying she is planning an extravagant $2 million ceremony to follow her City Hall nuptials in February. [People]

"I think this movie presents the relationship between the media and the government - and it's kind of interesting because it says that the institutions are both a little bit corrupt." — Ben Affleck, on State Of Play. [LA Times]

"I have a little blog that I do with some friends, but beyond that, I'm kind of clueless when it comes to the Internet. I just got e-mail down pat. So I've got to speed it up, I guess. But I tend to get my news from the radio. I don't know why, it's just the way I like it." — Rachel McAdams. [LA Times]

"I kind of value having people not know where I am or what I'm doing." — Zac Efron, who avoids MySpace and Facebook. [Reuters]

"I have never seen that (From Justin to Kelly), other than the time I had to sit through it at the premiere. I was contractually obligated to, and I fought that with tears - I did not want to do that movie." — Kelly Clarkson. [MSNBC Scoop via Rolling Stone]